Program Development

Read Chapter 13 on Files (Sections 13.1 - 13.2, 13.4 - 13.5). There are
several full length programs in this chapter that I would like you to copy
and run. Your code must have the following template:

def main():
# the body of the program
...
main()

Each program will be in a file by itself with .py extension. You
must make sure that it runs as shown in the book. These programs
do NOT have to be turned in. However, you are likely to see
variations of these programs in the quizzes.